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      <title>Class GeomUtil | HiAPI-C# 2025 </title>
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        <article data-uid="Hi.Geom.GeomUtil">



  <h1 id="Hi_Geom_GeomUtil" data-uid="Hi.Geom.GeomUtil" class="text-break">
Class GeomUtil  
  </h1>

  <div class="facts text-secondary">
    <dl><dt>Namespace</dt><dd><a class="xref" href="Hi.html">Hi</a>.<a class="xref" href="Hi.Geom.html">Geom</a></dd></dl>
  <dl><dt>Assembly</dt><dd>HiGeom.dll</dd></dl>
  </div>

  <div class="markdown summary"><p>Utility of Geometry.</p>
</div>
  <div class="markdown conceptual"></div>

  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public static class GeomUtil</code></pre>
  </div>




  <dl class="typelist inheritance">
    <dt>Inheritance</dt>
    <dd>
      <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></div>
      <div><span class="xref">GeomUtil</span></div>
    </dd>
  </dl>



  <dl class="typelist inheritedMembers">
    <dt>Inherited Members</dt>
    <dd>
    <div>
      <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.equals#system-object-equals(system-object)">object.Equals(object)</a>
    </div>
    <div>
      <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.equals#system-object-equals(system-object-system-object)">object.Equals(object, object)</a>
    </div>
    <div>
      <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.gethashcode">object.GetHashCode()</a>
    </div>
    <div>
      <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.gettype">object.GetType()</a>
    </div>
    <div>
      <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.memberwiseclone">object.MemberwiseClone()</a>
    </div>
    <div>
      <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.referenceequals">object.ReferenceEquals(object, object)</a>
    </div>
    <div>
      <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.tostring">object.ToString()</a>
    </div>
  </dd></dl>






  <h2 class="section" id="methods">Methods
</h2>


  <a id="Hi_Geom_GeomUtil_ExpandToBox3d_" data-uid="Hi.Geom.GeomUtil.ExpandToBox3d*"></a>

  <h3 id="Hi_Geom_GeomUtil_ExpandToBox3d_Hi_Geom_IExpandToBox3d_Hi_Geom_Mat4d_Hi_Geom_Box3d_" data-uid="Hi.Geom.GeomUtil.ExpandToBox3d(Hi.Geom.IExpandToBox3d,Hi.Geom.Mat4d,Hi.Geom.Box3d)">
  ExpandToBox3d(IExpandToBox3d, Mat4d, Box3d)
  
  </h3>

  <div class="markdown level1 summary"><p>Expands the destination bounding box with the transformed bounding box of source under matrix <code class="paramref">mat</code>.</p>
</div>
  <div class="markdown level1 conceptual"></div>

  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public static void ExpandToBox3d(this IExpandToBox3d src, Mat4d mat, Box3d dst)</code></pre>
  </div>

  <h4 class="section">Parameters</h4>
  <dl class="parameters">
    <dt><code>src</code> <a class="xref" href="Hi.Geom.IExpandToBox3d.html">IExpandToBox3d</a></dt>
    <dd><p>The source geometry</p>
</dd>
    <dt><code>mat</code> <a class="xref" href="Hi.Geom.Mat4d.html">Mat4d</a></dt>
    <dd><p>The transformation matrix</p>
</dd>
    <dt><code>dst</code> <a class="xref" href="Hi.Geom.Box3d.html">Box3d</a></dt>
    <dd><p>The destination bounding box</p>
</dd>
  </dl>












  <a id="Hi_Geom_GeomUtil_GetBox3d_" data-uid="Hi.Geom.GeomUtil.GetBox3d*"></a>

  <h3 id="Hi_Geom_GeomUtil_GetBox3d_Hi_Geom_IExpandToBox3d_" data-uid="Hi.Geom.GeomUtil.GetBox3d(Hi.Geom.IExpandToBox3d)">
  GetBox3d(IExpandToBox3d)
  
  </h3>

  <div class="markdown level1 summary"><p>Gets a Box3d representation of the specified object that implements IExpandToBox3d.</p>
</div>
  <div class="markdown level1 conceptual"></div>

  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public static Box3d GetBox3d(this IExpandToBox3d src)</code></pre>
  </div>

  <h4 class="section">Parameters</h4>
  <dl class="parameters">
    <dt><code>src</code> <a class="xref" href="Hi.Geom.IExpandToBox3d.html">IExpandToBox3d</a></dt>
    <dd><p>The source object that implements IExpandToBox3d.</p>
</dd>
  </dl>

  <h4 class="section">Returns</h4>
  <dl class="parameters">
    <dt><a class="xref" href="Hi.Geom.Box3d.html">Box3d</a></dt>
    <dd><p>A Box3d representation of the source object.</p>
</dd>
  </dl>











  <a id="Hi_Geom_GeomUtil_GetNearestPointOnLineSegment_" data-uid="Hi.Geom.GeomUtil.GetNearestPointOnLineSegment*"></a>

  <h3 id="Hi_Geom_GeomUtil_GetNearestPointOnLineSegment_Hi_Geom_Vec2d_Hi_Geom_Vec2d_Hi_Geom_Vec2d_" data-uid="Hi.Geom.GeomUtil.GetNearestPointOnLineSegment(Hi.Geom.Vec2d,Hi.Geom.Vec2d,Hi.Geom.Vec2d)">
  GetNearestPointOnLineSegment(Vec2d, Vec2d, Vec2d)
  
  </h3>

  <div class="markdown level1 summary"><p>Get the nearest point on a line segment to a given point.</p>
</div>
  <div class="markdown level1 conceptual"></div>

  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public static Vec2d GetNearestPointOnLineSegment(Vec2d point, Vec2d lineStart, Vec2d lineEnd)</code></pre>
  </div>

  <h4 class="section">Parameters</h4>
  <dl class="parameters">
    <dt><code>point</code> <a class="xref" href="Hi.Geom.Vec2d.html">Vec2d</a></dt>
    <dd><p>The point to find the nearest point from</p>
</dd>
    <dt><code>lineStart</code> <a class="xref" href="Hi.Geom.Vec2d.html">Vec2d</a></dt>
    <dd><p>Start point of the line segment</p>
</dd>
    <dt><code>lineEnd</code> <a class="xref" href="Hi.Geom.Vec2d.html">Vec2d</a></dt>
    <dd><p>End point of the line segment</p>
</dd>
  </dl>

  <h4 class="section">Returns</h4>
  <dl class="parameters">
    <dt><a class="xref" href="Hi.Geom.Vec2d.html">Vec2d</a></dt>
    <dd><p>The nearest point on the line segment</p>
</dd>
  </dl>











  <a id="Hi_Geom_GeomUtil_GetNearestPointOnLineSegment_" data-uid="Hi.Geom.GeomUtil.GetNearestPointOnLineSegment*"></a>

  <h3 id="Hi_Geom_GeomUtil_GetNearestPointOnLineSegment_Hi_Geom_Vec3d_Hi_Geom_Vec3d_Hi_Geom_Vec3d_" data-uid="Hi.Geom.GeomUtil.GetNearestPointOnLineSegment(Hi.Geom.Vec3d,Hi.Geom.Vec3d,Hi.Geom.Vec3d)">
  GetNearestPointOnLineSegment(Vec3d, Vec3d, Vec3d)
  
  </h3>

  <div class="markdown level1 summary"><p>Get the nearest point on a line segment to a given point.</p>
</div>
  <div class="markdown level1 conceptual"></div>

  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public static Vec3d GetNearestPointOnLineSegment(Vec3d point, Vec3d lineStart, Vec3d lineEnd)</code></pre>
  </div>

  <h4 class="section">Parameters</h4>
  <dl class="parameters">
    <dt><code>point</code> <a class="xref" href="Hi.Geom.Vec3d.html">Vec3d</a></dt>
    <dd><p>The point to find the nearest point from</p>
</dd>
    <dt><code>lineStart</code> <a class="xref" href="Hi.Geom.Vec3d.html">Vec3d</a></dt>
    <dd><p>Start point of the line segment</p>
</dd>
    <dt><code>lineEnd</code> <a class="xref" href="Hi.Geom.Vec3d.html">Vec3d</a></dt>
    <dd><p>End point of the line segment</p>
</dd>
  </dl>

  <h4 class="section">Returns</h4>
  <dl class="parameters">
    <dt><a class="xref" href="Hi.Geom.Vec3d.html">Vec3d</a></dt>
    <dd><p>The nearest point on the line segment</p>
</dd>
  </dl>











  <a id="Hi_Geom_GeomUtil_GetRayIntersection_" data-uid="Hi.Geom.GeomUtil.GetRayIntersection*"></a>

  <h3 id="Hi_Geom_GeomUtil_GetRayIntersection_Hi_Geom_Vec3d_Hi_Geom_Vec3d_Hi_Geom_Vec3d_Hi_Geom_Vec3d_" data-uid="Hi.Geom.GeomUtil.GetRayIntersection(Hi.Geom.Vec3d,Hi.Geom.Vec3d,Hi.Geom.Vec3d,Hi.Geom.Vec3d)">
  GetRayIntersection(Vec3d, Vec3d, Vec3d, Vec3d)
  
  </h3>

  <div class="markdown level1 summary"><p>Calculates the intersection point of two rays in 3D space.</p>
</div>
  <div class="markdown level1 conceptual"></div>

  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public static Vec3d GetRayIntersection(Vec3d rayABegin, Vec3d rayAVec, Vec3d rayBBegin, Vec3d rayBVec)</code></pre>
  </div>

  <h4 class="section">Parameters</h4>
  <dl class="parameters">
    <dt><code>rayABegin</code> <a class="xref" href="Hi.Geom.Vec3d.html">Vec3d</a></dt>
    <dd><p>The starting point of the first ray.</p>
</dd>
    <dt><code>rayAVec</code> <a class="xref" href="Hi.Geom.Vec3d.html">Vec3d</a></dt>
    <dd><p>The direction vector of the first ray.</p>
</dd>
    <dt><code>rayBBegin</code> <a class="xref" href="Hi.Geom.Vec3d.html">Vec3d</a></dt>
    <dd><p>The starting point of the second ray.</p>
</dd>
    <dt><code>rayBVec</code> <a class="xref" href="Hi.Geom.Vec3d.html">Vec3d</a></dt>
    <dd><p>The direction vector of the second ray.</p>
</dd>
  </dl>

  <h4 class="section">Returns</h4>
  <dl class="parameters">
    <dt><a class="xref" href="Hi.Geom.Vec3d.html">Vec3d</a></dt>
    <dd><p>The intersection point of the two rays, or null if they don't intersect.</p>
</dd>
  </dl>











  <a id="Hi_Geom_GeomUtil_IntersectLineSegmentCircle_" data-uid="Hi.Geom.GeomUtil.IntersectLineSegmentCircle*"></a>

  <h3 id="Hi_Geom_GeomUtil_IntersectLineSegmentCircle_Hi_Geom_Vec2d_Hi_Geom_Vec2d_System_Double_Hi_Geom_Vec2d__Hi_Geom_Vec2d__" data-uid="Hi.Geom.GeomUtil.IntersectLineSegmentCircle(Hi.Geom.Vec2d,Hi.Geom.Vec2d,System.Double,Hi.Geom.Vec2d@,Hi.Geom.Vec2d@)">
  IntersectLineSegmentCircle(Vec2d, Vec2d, double, out Vec2d, out Vec2d)
  
  </h3>

  <div class="markdown level1 summary"><p>Intersect line segment and circle.</p>
</div>
  <div class="markdown level1 conceptual"></div>

  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public static double IntersectLineSegmentCircle(Vec2d p0, Vec2d p1, double rr, out Vec2d pA, out Vec2d pB)</code></pre>
  </div>

  <h4 class="section">Parameters</h4>
  <dl class="parameters">
    <dt><code>p0</code> <a class="xref" href="Hi.Geom.Vec2d.html">Vec2d</a></dt>
    <dd><p>line segment begin point</p>
</dd>
    <dt><code>p1</code> <a class="xref" href="Hi.Geom.Vec2d.html">Vec2d</a></dt>
    <dd><p>line segment end point</p>
</dd>
    <dt><code>rr</code> <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.double">double</a></dt>
    <dd><p>radius*radius</p>
</dd>
    <dt><code>pA</code> <a class="xref" href="Hi.Geom.Vec2d.html">Vec2d</a></dt>
    <dd><p>first intersect point along <code class="paramref">p0</code> to <code class="paramref">p1</code></p>
</dd>
    <dt><code>pB</code> <a class="xref" href="Hi.Geom.Vec2d.html">Vec2d</a></dt>
    <dd><p>second intersect point along <code class="paramref">p0</code> to <code class="paramref">p1</code></p>
</dd>
  </dl>

  <h4 class="section">Returns</h4>
  <dl class="parameters">
    <dt><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.double">double</a></dt>
    <dd><p>determinant</p>
</dd>
  </dl>












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